Lab Safety Hair Bands provide a simple and effective way to help students secure long hair during laboratory experiments, dissections, heating procedures, and field investigations. Keeping hair tied back is an important component of laboratory safety practices, helping reduce the risk of contact with flames, chemicals, and equipment. Each package contains 30 solid-color elastic hair bands measuring 2 mm in thickness and 40 mm in diameter. Colors may vary. Suitable for classroom, laboratory, and field use.